The FC-P6 digital inhalable particle analyzer is designed to be compact and small, with dimensions of 160mm × 130mm × 90mm and a weight of 1.0kg, making it easy to carry. The front is equipped with a 3.5-inch LCD touch screen, which can intuitively display the dust mass concentration (mg/m ³) and data measurement curve. The side is equipped with RS485, USB data output interface and micro printer connection port, with a reasonable layout and stable interface. The instrument adopts a 90 ° light scattering method and is equipped with an optical stability self calibration device, which can eliminate the influence of temperature and humidity drift. The measurement accuracy reaches ± 10%, the repeatability error is ± 2%, and the detection sensitivity is 0.001mg/m ³. It can quickly determine PM5, PM2.5, PM1, TSP and total dust concentration. It has manual calibration function, reserved calibration cleaning system filter replacement channel, convenient for users to operate by themselves, and low maintenance cost. It can automatically store data during measurement, with a storage capacity of up to 15000 sets. It supports RS485 and USB output, and can automatically switch between wired and Bluetooth wireless printing modes when connected to a micro printer. It also supports multiple modes such as general measurement, continuous monitoring, and labor hygiene. The measurement time is set to 1 minute by default and can be set by oneself. The flow rate can be adjusted from 0.2-5L/min, with strong flexibility. The shell is made of high-quality wear-resistant and corrosion-resistant materials, and the internal core optical components have high precision and good stability, which can extend the service life. The product packaging is made of high-strength shock-absorbing materials, and comes with accessories such as a power adapter, data cable, user manual, warranty card, etc. It can be used immediately after opening the box. The user manual is easy to understand and convenient to get started quickly. After sales service includes a certain period of free warranty, professional technical support, regular calibration reminders, and parts supply. This instrument is suitable for occupational health law enforcement, public places, third-party testing institutions, and university research institutions, providing accurate and reliable support for air quality testing in various scenarios.